[POWERPC] 4xx: Add PCI to Walnut platform

This wires up the 4xx PCI support & device-tree bits for the
405GP based Walnut platform.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>

diff --git a/arch/powerpc/boot/dts/walnut.dts b/arch/powerpc/boot/dts/walnut.dts
index 754fa3960f8331813aede79d855bf57bbf49730c..681633ec954f5281693a8209ebddcfa97847c88a 100644 (file)
--- a/arch/powerpc/boot/dts/walnut.dts
+++ b/arch/powerpc/boot/dts/walnut.dts
@@ -190,6 +190,45 @@
                                virtual-reg = <f0300005>;
                        };
                };
+
+               PCI0: pci@ec000000 {
+                       device_type = "pci";
+                       #interrupt-cells = <1>;
+                       #size-cells = <2>;
+                       #address-cells = <3>;
+                       compatible = "ibm,plb405gp-pci", "ibm,plb-pci";
+                       primary;
+                       reg = <eec00000 8       /* Config space access */
+                              eed80000 4       /* IACK */
+                              eed80000 4       /* Special cycle */
+                              ef480000 40>;    /* Internal registers */
+
+                       /* Outbound ranges, one memory and one IO,
+                        * later cannot be changed. Chip supports a second
+                        * IO range but we don't use it for now
+                        */
+                       ranges = <02000000 0 80000000 80000000 0 20000000
+                                 01000000 0 00000000 e8000000 0 00010000>;
+
+                       /* Inbound 2GB range starting at 0 */
+                       dma-ranges = <42000000 0 0 0 0 80000000>;
+
+                       /* Walnut has all 4 IRQ pins tied together per slot */
+                       interrupt-map-mask = <f800 0 0 0>;
+                       interrupt-map = <
+                               /* IDSEL 1 */
+                               0800 0 0 0 &UIC0 1c 8
+
+                               /* IDSEL 2 */
+                               1000 0 0 0 &UIC0 1d 8
+
+                               /* IDSEL 3 */
+                               1800 0 0 0 &UIC0 1e 8
+
+                               /* IDSEL 4 */
+                               2000 0 0 0 &UIC0 1f 8
+                       >;
+               };
        };
 
        chosen {

diff --git a/arch/powerpc/platforms/40x/Kconfig b/arch/powerpc/platforms/40x/Kconfig
index b8f0a6c16486e1ecfdbe04864c85875d08f938d3..84551ab979f05a4089b51897a27122ddbfbf841f 100644 (file)
--- a/arch/powerpc/platforms/40x/Kconfig
+++ b/arch/powerpc/platforms/40x/Kconfig
@@ -59,6 +59,7 @@ config WALNUT
        depends on 40x
        default y
        select 405GP
+       select PCI
        help
          This option enables support for the IBM PPC405GP evaluation board.